Merge tag 'kconfig-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kconfig updates from Masahiro Yamada:
 "Kconfig now supports new functionality to perform textual
  substitution. It has been a while since Linus suggested to move
  compiler option tests from makefiles to Kconfig. Finally, here it is.

  The implementation has been generalized into a Make-like macro
  language.

  Some built-in functions such as 'shell' are provided. Variables and
  user-defined functions are also supported so that 'cc-option',
  'ld-option', etc. are implemented as macros.

  Summary:

   - refactor package checks for building {m,n,q,g}conf

   - remove unused/unmaintained localization support

   - remove Kbuild cache

   - drop CONFIG_CROSS_COMPILE support

   - replace 'option env=' with direct variable expansion

   - add built-in functions such as 'shell'

   - support variables and user-defined functions

   - add helper macros as as 'cc-option'

   - add unit tests and a document of the new macro language

   - add 'testconfig' to help

   - fix warnings from GCC 8.1"

* tag 'kconfig-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits)
  kconfig: Avoid format overflow warning from GCC 8.1
  kbuild: Move last word of nconfig help to the previous line
  kconfig: Add testconfig into make help output
  kconfig: add basic helper macros to scripts/Kconfig.include
  kconfig: show compiler version text in the top comment
  kconfig: test: add Kconfig macro language tests
  Documentation: kconfig: document a new Kconfig macro language
  kconfig: error out if a recursive variable references itself
  kconfig: add 'filename' and 'lineno' built-in variables
  kconfig: add 'info', 'warning-if', and 'error-if' built-in functions
  kconfig: expand lefthand side of assignment statement
  kconfig: support append assignment operator
  kconfig: support simply expanded variable
  kconfig: support user-defined function and recursively expanded variable
  kconfig: begin PARAM state only when seeing a command keyword
  kconfig: replace $(UNAME_RELEASE) with function call
  kconfig: add 'shell' built-in function
  kconfig: add built-in function support
  kconfig: make default prompt of mainmenu less specific
  kconfig: remove sym_expand_string_value()
  ...

48 files changed, 1396 insertions, 1089 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 50cee534fd64..c8156d61678c 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -8,8 +8,6 @@ squote  := '
 empty   :=
 space   := $(empty) $(empty)
 space_escape := _-_SPACE_-_
-right_paren := )
-left_paren := (
 pound := \#
 
 ###
@@ -57,7 +55,6 @@ kecho := $($(quiet)kecho)
 #   to specify a valid file as first prerequisite (often the kbuild file)
 define filechk
 	$(Q)set -e;				\
-	$(kecho) '  CHK     $@';		\
 	mkdir -p $(dir $@);			\
 	$(filechk_$(1)) < $< > $@.tmp;		\
 	if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
@@ -83,71 +80,6 @@ cc-cross-prefix =  \
 			echo $(c);                                    \
 		fi)))
 
-# Tools for caching Makefile variables that are "expensive" to compute.
-#
-# Here we want to help deal with variables that take a long time to compute
-# by making it easy to store these variables in a cache.
-#
-# The canonical example here is testing for compiler flags.  On a simple system
-# each call to the compiler takes 10 ms, but on a system with a compiler that's
-# called through various wrappers it can take upwards of 100 ms.  If we have
-# 100 calls to the compiler this can take 1 second (on a simple system) or 10
-# seconds (on a complicated system).
-#
-# The "cache" will be in Makefile syntax and can be directly included.
-# Any time we try to reference a variable that's not in the cache we'll
-# calculate it and store it in the cache for next time.
-
-# Include values from last time
-make-cache := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/,$(if $(obj),$(obj)/)).cache.mk
-$(make-cache): ;
--include $(make-cache)
-
-cached-data := $(filter __cached_%, $(.VARIABLES))
-
-# If cache exceeds 1000 lines, shrink it down to 500.
-ifneq ($(word 1000,$(cached-data)),)
-$(shell tail -n 500 $(make-cache) > $(make-cache).tmp; \
-	mv $(make-cache).tmp $(make-cache))
-endif
-
-create-cache-dir := $(if $(KBUILD_SRC),$(if $(cache-data),,1))
-
-# Usage: $(call __sanitize-opt,Hello=Hola$(comma)Goodbye Adios)
-#
-# Convert all '$', ')', '(', '\', '=', ' ', ',', ':' to '_'
-__sanitize-opt = $(subst $$,_,$(subst $(right_paren),_,$(subst $(left_paren),_,$(subst \,_,$(subst =,_,$(subst $(space),_,$(subst $(comma),_,$(subst :,_,$(1)))))))))
-
-# Usage:   $(call shell-cached,shell_command)
-# Example: $(call shell-cached,md5sum /usr/bin/gcc)
-#
-# If we've already seen a call to this exact shell command (even in a
-# previous invocation of make!) we'll return the value.  If not, we'll
-# compute it and store the result for future runs.
-#
-# This is a bit of voodoo, but basic explanation is that if the variable
-# was undefined then we'll evaluate the shell command and store the result
-# into the variable.  We'll then store that value in the cache and finally
-# output the value.
-#
-# NOTE: The $$(2) here isn't actually a parameter to __run-and-store.  We
-# happen to know that the caller will have their shell command in $(2) so the
-# result of "call"ing this will produce a reference to that $(2).  The reason
-# for this strangeness is to avoid an extra level of eval (and escaping) of
-# $(2).
-define __run-and-store
-ifeq ($(origin $(1)),undefined)
-  $$(eval $(1) := $$(shell $$(2)))
-ifeq ($(create-cache-dir),1)
-  $$(shell mkdir -p $(dir $(make-cache)))
-  $$(eval create-cache-dir :=)
-endif
-  $$(shell echo '$(1) := $$($(1))' >> $(make-cache))
-endif
-endef
-__shell-cached = $(eval $(call __run-and-store,$(1)))$($(1))
-shell-cached = $(call __shell-cached,__cached_$(call __sanitize-opt,$(1)),$(1))
-
 # output directory for tests below
 TMPOUT := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/)
 
@@ -155,36 +87,30 @@ TMPOUT := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/)
 # Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise)
 # Exit code chooses option. "$$TMP" serves as a temporary file and is
 # automatically cleaned up.
-__try-run = set -e;			\
+try-run = $(shell set -e;		\
 	TMP="$(TMPOUT).$$$$.tmp";	\
 	TMPO="$(TMPOUT).$$$$.o";	\
 	if ($(1)) >/dev/null 2>&1;	\
 	then echo "$(2)";		\
 	else echo "$(3)";		\
 	fi;				\
-	rm -f "$$TMP" "$$TMPO"
-
-try-run = $(shell $(__try-run))
-
-# try-run-cached
-# This works like try-run, but the result is cached.
-try-run-cached = $(call shell-cached,$(__try-run))
+	rm -f "$$TMP" "$$TMPO")
 
 # as-option
 # Usage: cflags-y += $(call as-option,-Wa$(comma)-isa=foo,)
 
-as-option = $(call try-run-cached,\
+as-option = $(call try-run,\
 	$(CC) $(KBUILD_CFLAGS) $(1) -c -x assembler /dev/null -o "$$TMP",$(1),$(2))
 
 # as-instr
 # Usage: cflags-y += $(call as-instr,instr,option1,option2)
 
-as-instr = $(call try-run-cached,\
+as-instr = $(call try-run,\
 	printf "%b\n" "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" -,$(2),$(3))
 
 # __cc-option
 # Usage: MY_CFLAGS += $(call __cc-option,$(CC),$(MY_CFLAGS),-march=winchip-c6,-march=i586)
-__cc-option = $(call try-run-cached,\
+__cc-option = $(call try-run,\
 	$(1) -Werror $(2) $(3) -c -x c /dev/null -o "$$TMP",$(3),$(4))
 
 # Do not attempt to build with gcc plugins during cc-option tests.
@@ -204,23 +130,23 @@ hostcc-option = $(call __cc-option, $(HOSTCC),\
 
 # cc-option-yn
 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
-cc-option-yn = $(call try-run-cached,\
+cc-option-yn = $(call try-run,\
 	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
 
 # cc-disable-warning
 # Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
-cc-disable-warning = $(call try-run-cached,\
+cc-disable-warning = $(call try-run,\
 	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
 
 # cc-name
 # Expands to either gcc or clang
-cc-name = $(call shell-cached,$(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc)
+cc-name = $(shell $(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc)
 
 # cc-version
-cc-version = $(call shell-cached,$(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
+cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
 
 # cc-fullversion
-cc-fullversion = $(call shell-cached,$(CONFIG_SHELL) \
+cc-fullversion = $(shell $(CONFIG_SHELL) \
 	$(srctree)/scripts/gcc-version.sh -p $(CC))
 
 # cc-ifversion
@@ -233,21 +159,21 @@ cc-if-fullversion = $(shell [ $(cc-fullversion) $(1) $(2) ] && echo $(3) || echo
 
 # cc-ldoption
 # Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
-cc-ldoption = $(call try-run-cached,\
+cc-ldoption = $(call try-run,\
 	$(CC) $(1) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -nostdlib -x c /dev/null -o "$$TMP",$(1),$(2))
 
 # ld-option
 # Usage: LDFLAGS += $(call ld-option, -X)
-ld-option = $(call try-run-cached, $(LD) $(LDFLAGS) $(1) -v,$(1),$(2))
+ld-option = $(call try-run, $(LD) $(LDFLAGS) $(1) -v,$(1),$(2))
 
 # ar-option
 # Usage: KBUILD_ARFLAGS := $(call ar-option,D)
 # Important: no spaces around options
-ar-option = $(call try-run-cached, $(AR) rc$(1) "$$TMP",$(1),$(2))
+ar-option = $(call try-run, $(AR) rc$(1) "$$TMP",$(1),$(2))
 
 # ld-version
 # Note this is mainly for HJ Lu's 3 number binutil versions
-ld-version = $(call shell-cached,$(LD) --version | $(srctree)/scripts/ld-version.sh)
+ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
 
 # ld-ifversion
 # Usage:  $(call ld-ifversion, -ge, 22252, y)
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
new file mode 100644
index 000000000000..bf7c0c9fa3a4
--- /dev/null
+++ b/scripts/Kconfig.include
@@ -0,0 +1,27 @@
+# Kconfig helper macros
+
+# Convenient variables
+comma       := ,
+quote       := "
+squote      := '
+empty       :=
+space       := $(empty) $(empty)
+dollar      := $
+right_paren := )
+left_paren  := (
+
+# $(if-success,<command>,<then>,<else>)
+# Return <then> if <command> exits with 0, <else> otherwise.
+if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
+
+# $(success,<command>)
+# Return y if <command> exits with 0, n otherwise
+success = $(if-success,$(1),y,n)
+
+# $(cc-option,<flag>)
+# Return y if the compiler supports <flag>, n otherwise
+cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
+
+# $(ld-option,<flag>)
+# Return y if the linker supports <flag>, n otherwise
+ld-option = $(success,$(LD) -v $(1))
diff --git a/scripts/kconfig/.gitignore b/scripts/kconfig/.gitignore
index 2da579edcbaf..0aabc1d6a182 100644
--- a/scripts/kconfig/.gitignore
+++ b/scripts/kconfig/.gitignore
@@ -2,9 +2,6 @@
 # Generated files
 #
 *.moc
-gconf.glade.h
-*.pot
-*.mo
 
 #
 # configuration programs
@@ -14,4 +11,3 @@ mconf
 nconf
 qconf
 gconf
-kxgettext
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 5def8779d7d8..a3ac2c91331c 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -3,7 +3,7 @@
 # Kernel configuration targets
 # These targets are used from top-level makefile
 
-PHONY += xconfig gconfig menuconfig config syncconfig update-po-config \
+PHONY += xconfig gconfig menuconfig config syncconfig \
 	localmodconfig localyesconfig
 
 ifdef KBUILD_KCONFIG
@@ -55,29 +55,6 @@ localyesconfig localmodconfig: $(obj)/conf
 	fi
 	$(Q)rm -f .tmp.config
 
-# Create new linux.pot file
-# Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
-update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
-	$(Q)$(kecho) "  GEN     config.pot"
-	$(Q)xgettext --default-domain=linux                         \
-	    --add-comments --keyword=_ --keyword=N_                 \
-	    --from-code=UTF-8                                       \
-	    --files-from=$(srctree)/scripts/kconfig/POTFILES.in     \
-	    --directory=$(srctree) --directory=$(objtree)           \
-	    --output $(obj)/config.pot
-	$(Q)sed -i s/CHARSET/UTF-8/ $(obj)/config.pot
-	$(Q)(for i in `ls $(srctree)/arch/*/Kconfig      \
-	    $(srctree)/arch/*/um/Kconfig`;               \
-	    do                                           \
-		$(kecho) "  GEN     $$i";                    \
-		$(obj)/kxgettext $$i                     \
-		     >> $(obj)/config.pot;               \
-	    done )
-	$(Q)$(kecho) "  GEN     linux.pot"
-	$(Q)msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
-	    --output $(obj)/linux.pot
-	$(Q)rm -f $(obj)/config.pot
-
 # These targets map 1:1 to the commandline options of 'conf'
 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
 	alldefconfig randconfig listnewconfig olddefconfig
@@ -151,8 +128,7 @@ clean-dirs += tests/.cache
 # Help text used by make help
 help:
 	@echo  '  config	  - Update current config utilising a line-oriented program'
-	@echo  '  nconfig         - Update current config utilising a ncurses menu based'
-	@echo  '                    program'
+	@echo  '  nconfig         - Update current config utilising a ncurses menu based program'
 	@echo  '  menuconfig	  - Update current config utilising a menu based program'
 	@echo  '  xconfig	  - Update current config utilising a Qt based front-end'
 	@echo  '  gconfig	  - Update current config utilising a GTK+ based front-end'
@@ -172,141 +148,77 @@ help:
 	@echo  '  kvmconfig	  - Enable additional options for kvm guest kernel support'
 	@echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel support'
 	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'
-
-# lxdialog stuff
-check-lxdialog  := $(srctree)/$(src)/lxdialog/check-lxdialog.sh
-
-# Use recursively expanded variables so we do not call gcc unless
-# we really need to do so. (Do not call gcc as part of make mrproper)
-HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
-                    -DLOCALE
+	@echo  '  testconfig	  - Run Kconfig unit tests (requires python3 and pytest)'
 
 # ===========================================================================
 # Shared Makefile for the various kconfig executables:
 # conf:	  Used for defconfig, oldconfig and related targets
-# nconf:  Used for the nconfig target.
-#         Utilizes ncurses
-# mconf:  Used for the menuconfig target
-#         Utilizes the lxdialog package
-# qconf:  Used for the xconfig target
-#         Based on Qt which needs to be installed to compile it
-# gconf:  Used for the gconfig target
-#         Based on GTK+ which needs to be installed to compile it
 # object files used by all kconfig flavours
 
-lxdialog := lxdialog/checklist.o lxdialog/util.o lxdialog/inputbox.o
-lxdialog += lxdialog/textbox.o lxdialog/yesno.o lxdialog/menubox.o
-
 conf-objs	:= conf.o  zconf.tab.o
-mconf-objs     := mconf.o zconf.tab.o $(lxdialog)
-nconf-objs     := nconf.o zconf.tab.o nconf.gui.o
-kxgettext-objs	:= kxgettext.o zconf.tab.o
-qconf-cxxobjs	:= qconf.o
-qconf-objs	:= zconf.tab.o
-gconf-objs	:= gconf.o zconf.tab.o
 
-hostprogs-y := conf nconf mconf kxgettext qconf gconf
+hostprogs-y := conf
 
 targets		+= zconf.lex.c
-clean-files	:= qconf.moc .tmp_qtcheck .tmp_gtkcheck
-clean-files	+= gconf.glade.h
-clean-files     += config.pot linux.pot
-
-# Check that we have the required ncurses stuff installed for lxdialog (menuconfig)
-PHONY += $(obj)/dochecklxdialog
-$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/dochecklxdialog
-$(obj)/dochecklxdialog:
-	$(Q)$(CONFIG_SHELL) $(check-lxdialog) -check $(HOSTCC) $(HOST_EXTRACFLAGS) $(HOSTLOADLIBES_mconf)
-
-always := dochecklxdialog
-
-# Add environment specific flags
-HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCC) $(HOSTCFLAGS))
-HOST_EXTRACXXFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCXX) $(HOSTCXXFLAGS))
 
 # generated files seem to need this to find local include files
 HOSTCFLAGS_zconf.lex.o	:= -I$(src)
 HOSTCFLAGS_zconf.tab.o	:= -I$(src)
 
-HOSTLOADLIBES_qconf	= $(KC_QT_LIBS)
-HOSTCXXFLAGS_qconf.o	= $(KC_QT_CFLAGS)
-
-HOSTLOADLIBES_gconf	= `pkg-config --libs gtk+-2.0 gmodule-2.0 libglade-2.0`
-HOSTCFLAGS_gconf.o	= `pkg-config --cflags gtk+-2.0 gmodule-2.0 libglade-2.0` \
-                          -Wno-missing-prototypes
-
-HOSTLOADLIBES_mconf   = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
-
-HOSTLOADLIBES_nconf	= $(shell \
-				pkg-config --libs menuw panelw ncursesw 2>/dev/null \
-				|| pkg-config --libs menu panel ncurses 2>/dev/null \
-				|| echo "-lmenu -lpanel -lncurses"  )
-$(obj)/qconf.o: $(obj)/.tmp_qtcheck
-
-ifeq ($(MAKECMDGOALS),xconfig)
-$(obj)/.tmp_qtcheck: $(src)/Makefile
--include $(obj)/.tmp_qtcheck
-
-# Qt needs some extra effort...
-$(obj)/.tmp_qtcheck:
-	@set -e; $(kecho) "  CHECK   qt"; \
-	if pkg-config --exists Qt5Core; then \
-	    cflags="-std=c++11 -fPIC `pkg-config --cflags Qt5Core Qt5Gui Qt5Widgets`"; \
-	    libs=`pkg-config --libs Qt5Core Qt5Gui Qt5Widgets`; \
-	    moc=`pkg-config --variable=host_bins Qt5Core`/moc; \
-	elif pkg-config --exists QtCore; then \
-	    cflags=`pkg-config --cflags QtCore QtGui`; \
-	    libs=`pkg-config --libs QtCore QtGui`; \
-	    moc=`pkg-config --variable=moc_location QtCore`; \
-	else \
-	    echo >&2 "*"; \
-	    echo >&2 "* Could not find Qt via pkg-config."; \
-	    echo >&2 "* Please install either Qt 4.8 or 5.x. and make sure it's in PKG_CONFIG_PATH"; \
-	    echo >&2 "*"; \
-	    exit 1; \
-	fi; \
-	echo "KC_QT_CFLAGS=$$cflags" > $@; \
-	echo "KC_QT_LIBS=$$libs" >> $@; \
-	echo "KC_QT_MOC=$$moc" >> $@
-endif
+# nconf: Used for the nconfig target based on ncurses
+hostprogs-y	+= nconf
+nconf-objs	:= nconf.o zconf.tab.o nconf.gui.o
 
-$(obj)/gconf.o: $(obj)/.tmp_gtkcheck
-
-ifeq ($(MAKECMDGOALS),gconfig)
--include $(obj)/.tmp_gtkcheck
-
-# GTK+ needs some extra effort, too...
-$(obj)/.tmp_gtkcheck:
-	@if `pkg-config --exists gtk+-2.0 gmodule-2.0 libglade-2.0`; then		\
-		if `pkg-config --atleast-version=2.0.0 gtk+-2.0`; then			\
-			touch $@;								\
-		else									\
-			echo >&2 "*"; 							\
-			echo >&2 "* GTK+ is present but version >= 2.0.0 is required.";	\
-			echo >&2 "*";							\
-			false;								\
-		fi									\
-	else										\
-		echo >&2 "*"; 								\
-		echo >&2 "* Unable to find the GTK+ installation. Please make sure that"; 	\
-		echo >&2 "* the GTK+ 2.0 development package is correctly installed..."; 	\
-		echo >&2 "* You need gtk+-2.0, glib-2.0 and libglade-2.0."; 		\
-		echo >&2 "*"; 								\
-		false;									\
-	fi
-endif
+HOSTLOADLIBES_nconf	= $(shell . $(obj)/.nconf-cfg && echo $$libs)
+HOSTCFLAGS_nconf.o	= $(shell . $(obj)/.nconf-cfg && echo $$cflags)
+HOSTCFLAGS_nconf.gui.o	= $(shell . $(obj)/.nconf-cfg && echo $$cflags)
 
-$(obj)/zconf.tab.o: $(obj)/zconf.lex.c
+$(obj)/nconf.o: $(obj)/.nconf-cfg
+
+# mconf: Used for the menuconfig target based on lxdialog
+hostprogs-y	+= mconf
+lxdialog	:= checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
+mconf-objs	:= mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog))
 
-$(obj)/qconf.o: $(obj)/qconf.moc
+HOSTLOADLIBES_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
+$(foreach f, mconf.o $(lxdialog), \
+  $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags)))
+
+$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/.mconf-cfg
+
+# qconf: Used for the xconfig target based on Qt
+hostprogs-y	+= qconf
+qconf-cxxobjs	:= qconf.o
+qconf-objs	:= zconf.tab.o
+
+HOSTLOADLIBES_qconf	= $(shell . $(obj)/.qconf-cfg && echo $$libs)
+HOSTCXXFLAGS_qconf.o	= $(shell . $(obj)/.qconf-cfg && echo $$cflags)
+
+$(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc
 
 quiet_cmd_moc = MOC     $@
-      cmd_moc = $(KC_QT_MOC) -i $< -o $@
+      cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@
 
-$(obj)/%.moc: $(src)/%.h $(obj)/.tmp_qtcheck
+$(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg
 	$(call cmd,moc)
 
-# Extract gconf menu items for i18n support
-$(obj)/gconf.glade.h: $(obj)/gconf.glade
-	$(Q)intltool-extract --type=gettext/glade --srcdir=$(srctree) \
-	$(obj)/gconf.glade
+# gconf: Used for the gconfig target based on GTK+
+hostprogs-y	+= gconf
+gconf-objs	:= gconf.o zconf.tab.o
+
+HOSTLOADLIBES_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs)
+HOSTCFLAGS_gconf.o  = $(shell . $(obj)/.gconf-cfg && echo $$cflags)
+
+$(obj)/gconf.o: $(obj)/.gconf-cfg
+
+$(obj)/zconf.tab.o: $(obj)/zconf.lex.c
+
+# check if necessary packages are available, and configure build flags
+define filechk_conf_cfg
+	$(CONFIG_SHELL) $<
+endef
+
+$(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE
+	$(call filechk,conf_cfg)
+
+clean-files += .*conf-cfg
diff --git a/scripts/kconfig/POTFILES.in b/scripts/kconfig/POTFILES.in
deleted file mode 100644
index 967457396990..000000000000
--- a/scripts/kconfig/POTFILES.in
+++ /dev/null
@@ -1,12 +0,0 @@
-scripts/kconfig/lxdialog/checklist.c
-scripts/kconfig/lxdialog/inputbox.c
-scripts/kconfig/lxdialog/menubox.c
-scripts/kconfig/lxdialog/textbox.c
-scripts/kconfig/lxdialog/util.c
-scripts/kconfig/lxdialog/yesno.c
-scripts/kconfig/mconf.c
-scripts/kconfig/conf.c
-scripts/kconfig/confdata.c
-scripts/kconfig/gconf.c
-scripts/kconfig/gconf.glade.h
-scripts/kconfig/qconf.cc
diff --git a/scripts/kconfig/check.sh b/scripts/kconfig/check.sh
deleted file mode 100755
index 97f0fee7d173..000000000000
--- a/scripts/kconfig/check.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-# Needed for systems without gettext
-$* -x c -o /dev/null - > /dev/null 2>&1 << EOF
-#include <libintl.h>
-int main()
-{
-	gettext("");
-	return 0;
-}
-EOF
-if [ ! "$?" -eq "0"  ]; then
-	echo -DKBUILD_NO_NLS;
-fi
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 283eeedaa4fa..671ff5364497 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -3,7 +3,6 @@
  * Released under the terms of the GNU GPL v2.0.
  */
 
-#include <locale.h>
 #include <ctype.h>
 #include <limits.h>
 #include <stdio.h>
@@ -86,7 +85,7 @@ static int conf_askvalue(struct symbol *sym, const char *def)
 	enum symbol_type type = sym_get_type(sym);
 
 	if (!sym_has_value(sym))
-		printf(_("(NEW) "));
+		printf("(NEW) ");
 
 	line[0] = '\n';
 	line[1] = 0;
@@ -133,7 +132,7 @@ static int conf_string(struct menu *menu)
 	const char *def;
 
 	while (1) {
-		printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
+		printf("%*s%s ", indent - 1, "", menu->prompt->text);
 		printf("(%s) ", sym->name);
 		def = sym_get_string_value(sym);
 		if (sym_get_string_value(sym))
@@ -166,7 +165,7 @@ static int conf_sym(struct menu *menu)
 	tristate oldval, newval;
 
 	while (1) {
-		printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
+		printf("%*s%s ", indent - 1, "", menu->prompt->text);
 		if (sym->name)
 			printf("(